Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Tucson → Denver via San Francisco: arrives on time 62%
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09:04 TUS → 11:25 SFOUA 4683 · United, flown by SkyWest · 2h 21m · 65% on time, 0.0% cancelled
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1h 18m layover in San Francisco (SFO) · 45 min minimum on one ticket
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12:43 SFO → 16:35 DENUA 540 · United · 2h 52m · 77% on time, 0.0% cancelled
Total trip 6h 31m, scheduled departure to arrival (Denver is 1 h ahead of Tucson). Times are local. Both flew on 56 of the last 56 days.
Makes the connection81%The first flight arrived more than 33 minutes late on 19% of the days it flew: too late for the 45-minute minimum connection on a 1h 18m layover.
Arrives on time62%First flight not cancelled (0.0% are) × connection made (81%) × second flight not cancelled (0.0% are) and within 15 minutes (77%).
Total trip6h 31mTUS 09:04 to DEN 16:35, layover included
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.